Question

Sendo f(x) = x2 – 2.x +3, obter f(-2), f(0 ) , f( 1) e f( ½)

Answer 1

f(-2)= -2.2 - 2.-2 +3
f(-2)= -4 +4 + 3
f(-2)= 0 + 3
f(-2)= 3

f(0)= 0.2 - 2.0 + 3
f(0)= 0 - 0 + 3
f(0)= 3

f(1/2)= 1/2.2 -2.1/2 + 3
f(1/2)= 0+3
f(1/2)= 3